Juan Tomás de Salas (1938–2000) was a Spanish journalist. He was born in Valladolid on April 30, 1938 and died in Madrid on 22 August 2000. He was the founder of Cambio 16 and Diario 16. In the 1960s he also worked for the Colombian newspaper El Tiempo.
Tomás de Salas studied law in Madrid and obtained a PhD in Economic History at La Sorbonne in Paris. During his youth he also showed enthusiasm for journalism and interest in political activism. He began to engage in anti-Franco activities, and in 1961 joined the Free Spanish Press Agency, associated with the People's Liberation Front. In 1962, when police arrested nearly a hundred members of the organization, de Salas had to seek political asylum. He managed to take refuge in the embassy of Colombia in Spain, and moved to Bogotá.
In Colombia he started working with the newspaper El Tiempo, and that is where he seriously began to be involved in journalism. In 1966 he moved to France to work at France Press, and in 1969 to London, where he worked for the Spanish version of The Economist. That same year he was allowed to return to Spain when he was acquitted.
Chambers founded in 1971, along with 15 other journalists and media professionals the weekly Cambio 16. Under the Franco dictatorship, the magazine focused on issues of "Economy and Society", and after Franco's death, became a magazine of general information, which achieved great prominence during the Spanish Transition. The success of the publication led him to found a general newspaper called Diario 16, which was released on 18 October 1976.
During 1980, the good sales of his two publications led him to form a media conglomerate. He created Grupo 16, under which magazines like Motor 16 or Marie Claire were also released.
However, during the 1990 publications went through a serious crisis, led by the poor economic performance of Diario 16. This crisis ended with the sale or even closure of almost all the magazines within his group.